Winding-machine.



0. B. SNELL. WINDING MACHINE.

APPLICATION FILED FEB. 3, 1913.

Patented Jan. 13, 1914.

3 SHEETS-SHEET l.

[72 ven fior:

C. B. SNELL.

WINDING MACHINE,

APPLICATION FILED FEB.3 1913.

1,084,871, Patented Jan. 13, 191i 3 SHEETSSHEET 2.

O. B. SNELL.

WINDING MACHINE.

APPLICATION FILED FEB. a, 1913,

1,84?',37 1., Patented Jan. 13, 1914.

Fay m Warney UNITED STATES PATENT OFFICE.

CULLEN B. SNELL, OF BROOKLINE, MASSACHUSETTS.

WIN DIN G-MACHINE.

To all whom it may concern:

Be it known that I, CULLEN B. SNELL, a citizen of the United States,residing at Brookline, inthe county of Norfolk, State Themachine inwhich the invention re-.

sides is particularly applicable for winding coils for electricalpurposes, although I contemplate its employment in winding for otherpurposes also. It is contrived to wind a continuous wire or othermaterial of like form in flat spiral layers, one against another, suchlayers being alternately increasing spirals and decreasing spirals, theformer being wound from the center outward, and the latter wound fromthe outer periphery inward. i

My machine is characterized by the employment therein of a presser-meanswhich acts in axial direction against one end of the mass being wound,and of a'winding-guide located intermediate the said presser means andthe said end and traversed outward and inward between them to lay thewire or other material in increasing and decreasing spiralssuccessively, the said presser-means conforming to the winding-guide bydeveloping a progressive clearance-wave at the said guide, and acting tohold in place the portion of wire that has just been laid by the saidguide. In a convenient mode of embodiment of the main principles of theinvention the presser and mass being wound rotate in unison and thewinding-guide is non-rotating.

An embodiment of the invention is illustrated in the drawings, in whichlatter Figure 1 shows in side elevation,partly broken away, a machinecontaining the said embodiment. Fig. 1 is a partly-sectional detail viewon enlarged scale, showing the upper portion of a shell or bobbin, andthe pressure-device acting thereon. Fig 2 is a plan of the said machine,in section on line 2, 2, of Fig. 1. Fig. 3 is a view partly in sectionon line 8, 3, of Fig. 2. Fig. at is a view similar to Fig. 3, but withthe rotary cyl; inder in vertical section. Fig. 5 is a plan view of therotary cylinder and segmental pressers. Fig. 6 is a side view and Fig. 7a top view of the central arbor. Figs. 8, 9 and 10 are detail viewsshowingone of the seg- Specification of Letters Patent.

Application filed February 3, 1913.

Patented an. 13, 1914. Serial No. 745,946.

mental pressers. Fig. 11 is a side elevation and Fig. 12 a sectionalview of a shell or bobbin.

Having reference to the drawings, the latter represent a machineconstructed to wind upon a shell or bobbin such as that shown separatelyin Figs. 11 and 12, and comprisinga cylindrical barrel 1 having anexternal flange or collar 1 adjacent one end thereof. Such end isrepresented in Figs. 1 and 12 as closed, and as formed interiorly with arecess 1 located oif-center to receive a driving projection on therotating arbor 2 (Figs. 1 2, 4, 6 and 7) of the machine. The coil iswound upon the said barrel, with the first or endmost spiral against thesaid collar or flange, as in Figs. 1 and 3. For a portion of its lengththe arbor 2 is cylindrical, to fit the interior of the barrel of theshell or bobbin. The driving projection is marked 2 in Figs. 6 and 7.

The arbor 2 is rotated through combining it with a cylinder 3 havingsuitable actuating connections by means of which it is rotated. Suchconnections comprise herein a helical gear 4 fixed upon an extension 3of said cylinder, and a like gear 4 fixed upon driving shaft 5 andmeshing with gear 4.

shifted in the direction of its length, axially of the cylinder, withoutinterfering with the driving connection between cylinder and arbor.

Means is provided for pressing the arbor with yielding force upwardthrough the cylinder, to maintain its driving projection 2 in drivingengagement with the shell or bobbin; that is to say, to keep suchprojection within the recess 1 at all times, whether the shell or bobbinbe in its lowest, an intermediate, or its highest position. In thepresent instance this means comprises an expanding spiral spring 6 which1s mainly contained within a longitudinal bore of the arbor and rests byitslower end upon the bottom of a yoke 7 attached to the lower end face.

.portion 1 of the the winding is to be effected. The said guideiscarried by a bar 14 working in tr the cylinder. This end of saidspring yoke, and through engagement therewith assists in causingthe'arbor to rotate in unlson with the cylinder. ,When an empty shell orbobbin is placed upon the arbor and pressed down within the cylinder asin Figs. 1, 3, 4, depressing the arbor as in such figures, the spring isthereby compressed. As the shell crbobbin gradually is raised during thewinding process by the growing length of coil wound thereon the springby expanding causes the arbor to follow upward so as to keep its drivingprojection 2 within the recess 1 of the shell or bobbin.

I provide convenient means for pressing the shell or bobbin downwardwith yielding force so as to keep the wound portion of the coil thereonin a state ofcompression and cause the convolutions of each succeedingspiral to be wound under pressure between the preceding spiral and anopposing sur- Such pressure-means comprises in this instance an uprightrod9, Figs. 1 and 3, fitted to fixed guides 10, 10, Fig. 1, throughwhich it is capable of vertical sliding movement, and splined to suchguides to prevent it from rotating, the said rod carrying a weight 11,Fig. 1, and its lower end having applied thereto a shoe 12, Figs. 1, 1,and 3, which rests upon the top end of the shell or bobbin. The saidshoe comprises a. cap 12*,

Fig. 1*, receiving the lower end of the rod, a flanged disk 12 whichmakes contact with the top end of the'shell or bobbin, and ballbearings12, 12, between said cup and flanged disk permitting the flanged disk to.turn freely in unison with the shell or bobbin relative to the rod 9.

' A winding-guide is shown at 13, Figs. 1 and 2. Its end, provided witha delivery eye or passage for the wire or other material, a, coming:froni a source of supply 6,

shown as a filled spool, extends above the upper end-of the rotarycylinder 3 into proxlmity to the periphery of the cylindrical shell orbobbin upon which ed guides 15, 15., and is given a gradual traversingmovement outward from and inward toward the axis of the arbor 2 by meansof a heart-cam l6 engaging with a roll'14 carried by said bar, and acontracting spiral spring 17 actingwith a tendency to move the bar inopposition to the cam.

-The said cam 16 is fixed upon an upright shaft 18, and is rotated bymeans of driving connections comprising a worrn-gear 19 fixed upon thesaid upright shaft, and a worm 20 fixed upon the shaft 5. On the wayfrom the source of supply to the winding-guide, the wire passes' througha supplemental guide-loop 14 which also is carried by bar 14.

As will be appreciated, it is considerable of a problem to wind finewire or'other material of like form in successive flat spirals,

one against another, alternately increasing and decreasing, upon anarbor, shell or bobbin, especially when employing a non-rotatingwinding-guide, and depen ing upon the rotation of the said arbor, shellor bobbin to draw the wire or the like from the source of supply. Theproblem is especially trying in the case of winding a decreasing flatspiral, 2'. 6., one in which the convolutions are wound one withinanother from the outer periphery to the inner periphery. To

accomplish such work I apply pressure to the wire or other materialimmediately upon its being laid in forming a convolution, and maintainpressure upon the convolutions of the spiral which is being wound,holding them thereby between the collar or flange of the arbor, shell,or bobbin and an opposing surface, or between the convolut-ions of thelast preceding spiral and such surface. The preferred type of means fordoing this is shown in the drawings. 21, 21, etc, Figs. 3, 4, 5 and 8,9, 10, are segmental pressers, forming a circular series. They aremounted upon cylinder 3 so as to rotate in unison therewith and with thearbor 2 and shell or bobbin. Their body-portions 21*, Fig. 8, work inlongitudinal grooves in the periphery of cylinder 3, in which they arecapable of movement lengthwise of the axis of the cylinder and arbor. Togive them such movement, the said bodies are notched on their outeredges at 21 Figs. 8

and 9, to fit a stationary cam-ring 22, Figs.

23, in the fixed box or casing 24 surrounding the body of the cylinder.The working portions of the segmental press-ers fit together in the formof a ring which closely surrounds the cylinder of the shell or bobbin.The diameter of such ring exceeds that of the coil to be wound. Thecam-path of the cam-ring 22 is all on one level except at the pointimmediately in line with the windingguide, and immediately adjoiningsuch point at front and rear. Here, there is a bend in the cam-pathsuflicient to cause the working portion of each presser in' turn toclear the winding-guide in arriving at and v winding-guide works out andin'between the shoulder or flange l and the ring of segmental pressers,the said shoulder or flange being forced toward the said pressers by theaction of weight 11. Thereby, in beginning the winding operation, thewire is wound in spiral form between the said shoulder or flange and thesaid ring of segmental pressers, an increasing spiral being wound as theguide moves gradually outward, and a decreasing spiral between suchincreasing spiral and-the said ring as the guide moves inward again. Aseach presser in succession arrives in close proximity to the guide it iswithdrawn downward as in Fig. 3 so as to clear the guide, butimmediately after passing the guide is restored to working positionagain so that the portion of wire just laid by the guide is clampedagainst the preceding spiral, in the place in which it was laid in theconvolution being formed. and the different convolutions of the spiralthat is being wound are held clamped against the preceding spiral allthe way around except immediately at the guide.

Preferably, I employ a continuous flat ring 25 of flexible materialwhich intervenes between the ring of segmental pressers and the woundspirals, to give a continuous contact surface. This ring may be composedof rubber, or equivalent material to serve as a cushion whichcontributes to preventing displacement of the convolutions. I haveemployed rubber in practice, and I'have also employed a ring ofparchmentized paper. The winding-guide passes between the wound spiralsand this ring, which latter is depressed by the guide in passing thelatter, as in Fig. 3, and then recovers its normal straight condition.As each spiral in succession is wound in between the preceding spiraland the ring of segmental pressers of the said flexible ring, it forcesthe shell or bobbin upward against the resistance of the weightedpressure rod 9.

The amount of the weight 11 determines the density of the coillengthwise.

The ring 25 may be left temporarily upon' the barrel 1, at the end ofthe coil, when the coil has been wound to the required length and thefilled shell or bobbin is removed from the machine, to hold the finalspirals in place until the second head or flange is applied to the saidbarrel, and removed at the time of applying said second head or flange,or it may be permitted to remain permanently.

It will be perceived that the cam-ring 22 acts to depress certain of thesegmental pressers downward in a curve at the winding-guide, .to clearthe latter, and as the cylinder revolves carrying the segmental presserssuccessively to and past the winding-guide .the successive pressers aredepressed one after another progressively. The action is that of a waveby which the segmental pressers are in turn caused to clear thewinding-guide in passing the same. A similar progressive wave isproduced in the flexible ring 25 by the winding-guide, the

portion of such ring which at any given instant is in contact with thewinding guide being pressed down by the latter, and being pressed upagain against the adjacent convolutions, immediately after passing thewinding-guide, by the action of the segmental pressers in being actuatedby the canrring. The ring 25 may take the form of a cushion of suitablethickness, in which case the segmental pressers and their cam may bedispensed with.

In case the exterior diameters of different shells or bobbins, or otherreceivers, should vary or be irregular, the ring 25, by fitting closelyby its inner periphery against the exterior of a shell, bobbin or otherreceiver, will prevent the inner convolutions of the wire or othermaterial being wound from dropping between the said exterior and theinner edges of the presser-segments.

The tops or working ends of the segments constitute a pressing surface.The ring 25 may in some instances be attached to the working ends of thepresser-segments as by means of cement or pins, or otherwise; and,

as will be obvious, the said ring 25 may be divided up into segments ofa size corresponding with the working ends of the presser-segments, incase continuity in the surface contacting with the spirals andconvolutions being wound is not deemed essential.

The invention is not restricted in the application of the principlesthereof to the precise construction and arrangement herein shown anddescribed.

While a machine embodying the principles of my invention as hereinbeforede-' scribed is particularly adapted for the winding of wire or othermaterial in a dry state or with a non-adhesive surface, it is equallyavailable for use in the winding of material (either covered oruncovered) which is coated, preferably just .prior to being deposited asa convolution of the coil in process of formation, with a substance orcompound, which may be either of semi-liquid and of an adhesive nature,or ordinarily solid but more or less completely liquefied or meltedbefore application to the material. In such case, as the material iswound in position the coating compound serves not only to cement orsecure the material in the position in which it is deposited, but also,where said compound is of-a dielectric nature and is applied to in-- inthe said trough.

hat is claimed is,

1. In a machine for winding in spiral layers, one against another, incombination, a presser which acts in axial direction against one end ofthe mass being wound, and which progressively conforms to thewinding-guide and holds in place the portion of material that has justbeen laid by the said guide, and a winding-guide which traverses outwardand inward between the presser and the said end of the wound mass to laythe material inin creasing'and decreasing spirals successively.

2. In a machine for winding in spiral layers, one against another, incombination, a. presser which rotates in unison with the mass beingwound, acting in axial direction against one end of such mass, and whichconforms to the winding-guide and holds in place the portion of materialthat has just been laid by the said guide, and a non-rotatingwinding-guide which traverses outward and inward between the presser andthe wound mass to lay the material in in creasing and decreasing spiralssuccessively at said end of such mass.

3. A machine for winding in spiral layers, one against another,comprising in combination, a winding-guide, means for producing relativerotation between the mass being wound and the winding-guide, means fortraversing the winding-guide outward and inward to deliyer the materialin increasing and decreasing spirals successively, and presser-meansbetween which and the preceding wound spiral the winding-guide works,said presser-means receding from the said spiral in a progressiveclearance-wave at the winding-guidev and immediately assuming positionto hold in place the portion of material which has just been deliveredby said winding-guide.

at. In a winding machine, in combination, a winding-guide, means forproducing relative rotation between a receiver on which windingisefiect-ed and the said winding.- guide, means for traversing thewindingguide outward and inward to deliver the wire or other material inincreasing and dc v creasing spirals successively, and pressermeansbetween which and the preceding spiral the winding-guideenters andworks, said presser-means progressively conforming to the winding-guideto clear the latter and immediately assuming position to hold in placethe portion of wire which has just been laid.

5. In a winding machine, in combination,

a winding-guide, means for producing relative rotation between the massbeing wound and the said winding-guide, means for traversing thewinding-guide outward and inward to deliver the wire or other materialin increasing and decreasing spirals successively, and a pressercomprising a series of presser-segments between which and the precedingspiral the winding-guide delivers the wire or other material, saidpresser-segments receding in a wave "at the winding-guide to clear thelatter and immediately assuming position-to hold in place the portion ofwire which has just been laid.

6. In a winding machine, in combination,

a non-rotatingwinding-guide, means for rotating the mass which is beingwound, means for traversing the winding-guide outward and inward todeliver the wire or other material in increasing and decreasing fiatspirals successively, and presser-means between which and the precedingspiral the windingguide enters and works, said pressermeansprogressively receding from said spiral at the winding-guide to giveclearance to the latter and immediately resuming position to hold inplace the portion of material that has justbeen laid by the guide.

7. In a machine for winding in spiral layers, one against another,.incombination, a presser comprising a series of presser-segments whichrotates in unison with the mass being wound, acting in axial directionagainst one end of such mass, and which conforms to the winding-guide,said pressersegments acting successively to hold in place the-portion ofwire or other material that has just been laid by the said guide, and anon-rotating winding-guide which traverses outward and inward betweenthe presser and the wound mass to lay the wire or other material inincreasing and decreasing spirals successively at said end of the mass,-

8. In a winding machine, in combination, a non-rotating winding'guide,means for rotating the mass which is being wound, means for traversingthe winding guide outward and inward to deliver the wire or othermaterial in increasing and decreasing flat spirals successively, and aseries of segmental pressers between which and the preceding spiral thewinding-guide delivers the wire or other material, said series recedingin a wave at the winding-guide and immediately resuming position tohold'in place the portion of material which has just been laid.

9. In a winding machine, in combination,

"a winding-guide, means for producing relative rotation between the massbeing wound and the said winding-guide, means for traversing thewinding-guide outward and inward to deliver the wire or other materialin increasing and decreasing Spirals successively, presser-means betweenwhich and the preceding spiral the winding-guide delivers the wire orother material in 'being wound, and a cam by which said pressermeans iscaused to form a clearance-wave at the Winding-guide and immediatelyassume working position to hold the adjacent convolutions in place.

10, In a winding machine, in combination, a non-rotating windinguide,means for rotating the mass'which is eing wound, means for traversingthe winding-guide outward and inward to deliver the wire or othermaterial in increasing and decreasing flat spirals successively, pressermeans between which and the preceding spiral the windingguide deliversthe wire or other material in being wound, and a cam by which saidpresser-means is caused to form a clearancewave at the winding-guide andimmediately resume working position to hold in place the portion ofmaterial that has just been laid.

11. In a windingmachine, in combination,

a winding-guide, means for producing relative rotation between the massbeing wound and the said winding-guide, means for traversing thewinding-guide outward and inward to deliver the wire or other materialin increasing or decreasing spirals successively,

' aseries of segmental pressers between which and the preceding spiralthe winding-guide delivers the wire or other material, anda camproducing a clearance-wave in said series at the winding-guide.

12. In awinding machine, in combination, a non-rotating winding-guide,means for r0- tating the mass which is being wound, means for traversingthe winding-guide outward and inward to deliver the wire or other ma-'terial in increasing or decreasing flat spirals successively, a seriesof segmental pressers between which and the preceding spiral thewinding-guide delivers the wire or other material, and a cam producing aclearancewave in said series at the winding-guide.

13. In a winding machine, in combination, a winding-guide, means forproducing relative rotation between the mass which is being wound andthe said winding-guide, means for traversing the winding-guide outwardand inward to deliver the wire or other material in increasing anddecreasing spirals successively, and presser-means having a continuoussurface between which and the preceding spiral the winding-guidedelivers the wire or other material, said surface conforming in aprogressive wave to the wind ing-guide and immediately resuming workingposition.

14. In a winding machine, in combination, a non-rotating winding-guide,means for rotating the mass which is being wound, means for traversingthe winding-guide outward and inward to deliver the wire or othermaterial in increasing and decreasing flat spi-' rals successively, andresser-means having a continuous surface between which and the precedingspiral the winding-guide delivers the wire or other material, saidsurface conforming in a progressive wave to the winding-guide andimmediately resuming working position.

15. In a winding machine, in combination, a winding-guide, means forproducing relative rotation between the mass which is being wound andthe said winding-guide,

means for traversing the winding-guide out-t ward and inward to deliverthe wire or other material in increasing and decreasing spiralssuccessively, and presser-means including a series of segmental pressersand a continuous flexible surface between which latter and the precedingspiral the winding-guide delivers the wire or other material, saidpressers and flexible surface conforming in a progressive wave to thewinding-guide.

16. In a winding machine, in combination,

a non-rotating winding-guide, means for roadapted to move axiallythereof as thev wound coil grows in length, a winding-guide movingoutward and inward to deliver the wire or other material in increasingand de creasing spirals successively, and pressermeans comprising acontinuous flexible surface making contact with the adjacentconvolutions, a circular series of presser-segmerits actuating saidflexible surface to hold said convolutions against the preceding spiral,and means producing a progressive clearance-wave in saidpresser-segments at v the winding-guide.

18. In a winding machine, in combination, a revoluble cylinder, awinding arbor revolving in unison with said cylinder and adapted to moveaxially thereof as the wound coil grows in length, a winding-guidemoving outward and inward to deliver the wire or other material inincreasing and decreasing spirals successively, and presser-meansrevolving with the said cylinder, between which and the preceding spiralthe winding guide delivers the wire or other material in forming theconvolutions of the new spiral, said pressenmeans forming a progressiveclearance-wave at the winding-guide.

19. In a winding machine, in combination, I

a revoluble cylinder in unison with which the mass being wound revolves,a windingguide moving outward and inward to deliver the wire or othermaterial 1n increasing and decreasmg coils successlvely, andpressermeans revolving with the said cylinder, be tween which and thepreceding spiral the axially thereof as the wound coil grows in length,a winding-guide moving outward and inward to deliver the wire or othermaterial in increasing and decreasing spirals successively, andpresser-means comprising a circular series of presser-segments mountedin said longitudinal grooves and acting to hold the last-woundconvolutions against the preceding spiral, and means producing aprogrcsslve clearance-wave in said pressersegments at the windingguide.

.21. In "a winding machine, in combination,

' a revoluble cylinder, a winding arbor revolving in unison with saidcylinder and adapted to move axially thereof as the wound coil grows inlength, a winding-guide moving outward and'inward to deliver the wire orother material in increasing and decreasing spirals successively, andpresser-means including a circular series of presser-segments carried bysaidwcylinder and moving longitudinally thereon to form a progressiveclearance-wave at the winding-guide.

22. In a winding machine, in combination, a revoluble cylinder, awinding-arbor revolving in unison with said cylinder and adapted to moveaxially thereof as the wound coil grows in length, a winding-guidemoving outward and inward to deliver the wire or other material inincreasing and decreasing spirals successively, andpressermeanscomprising a circular series of presser-segments revolving with thecylinder, holding in place against the preceding spiral the portion ofwire or other material just de livered by the guide, and a cam producinga progressive clearance-wave in said pressersegments at thewinding-guide.

23. In a winding machine, incombination, a revoluble cylinder, awinding-arbor revolving in unison with said cylinder and adapted to moveaxially thereof as the wound coil grows in length, a non-rotatingwindingguide moving outward and inward to de progressive clearance-waveat the'windingguide. 1

24. In a winding machine, in combination, a revoluble cylinder, awinding-arbor revolving in unison with said cylinder and adapted to moveaxially thereof as the wound coil grows in length, a non-rotatingwindingguide moving outward and inward to deliver the wire or othermaterial in'increasing and decreasing spirals successively, andpressermeans including a circular series of pressersegments carried bysaid cylinder and moving longitudinally thereonto form a progressiveclearance-wave at the winding-guide.

25. In a winding machine, in combination, a revoluble cylinder, awinding-arbor revolving in unison with said cylinder and adapted to moveaxially thereof as the wound coil grows in length, a non-rotating.windingguide moving outward and inward to deliver the wire or othermaterial in increasing and decreasing spirals successively, andpressermeans COIIlpIlSlIlg .a circular series of presser-segmentsrevolving with the cylinder,

holding the new convolutions against the preceding spiral, and a camproducing a progressive clearance-wave in said pressersegments at thewinding-guide.

26. In a machine forwinding in spiral I layers, one against another, incombination, means for'applying a coating to the. material on its way tobe wound, a presser which acts in axial direction against one end of themass being wound, and which progressively conforms to the winding guideand holds in place the portion of material that has just been laid bythe said guide, and a winding guide which traverses outward and inwardbetween the presser and the said end of the wound mass to lay thematerial in increasing and decreasing layerssuccessively.

In testimony whereof I afiix my signature in presence of two witnesses.

- l GULLEN B. SNELL.

Witnesses:

NATHAN B. DAY, CHAS. F. RANDALL

